With the development and application of computer technology, the finite element method is used to calculate the strength of the hydraulic cylinder, and the optimization design with weight and cost as the goal is also increasing. But compared with mechanical transmission parts, the hydraulic cylinder structure and strength design theory are still lagging behind.
In the design of hydraulic cylinder, some common basic formulas are not yet reasonable and can only be used for rough calculations. Sometimes a conservative calculation method is used, or a larger safety factor is used to make up for some deficiencies in the calculation.
For example, when checking the stability of the hydraulic cylinder, it is conservative to regard the hydraulic cylinder as an integral rod with equal cross-sectional area and directly refer to the Euler formula to calculate, which leads to material consumption, volume and weight increase. The hydraulic cylinder force is underestimated. Although the selected safety factor is relatively large, unsafe conditions are unavoidable. Therefore, the further improvement of the computer automatic design and verification of the hydraulic cylinder is awaiting research and development.
